This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A092000 #3 Mar 30 2012 17:29:14 %S A092000 240,792,912,1248,2040,2280,2760,3528,3720,3960,4080,4440,4680,4872, %T A092000 5160,5520,5880,6600,6720,6960,7080,8520,8568,8760,9072,9120,9672, %U A092000 9912,10248,10440,11088,11592,11832,11880,12408,12480,12720,13200,13560 %N A092000 Numbers that can be expressed as the difference of the squares of primes in exactly four distinct ways. %e A092000 240 = 17^2-7^2 = 19^2-11^2 = 23^2-17^2 = 61^2-59^2 %Y A092000 Cf. A090781, A090782, A090788, A092001-A092020. %K A092000 nonn %O A092000 1,1 %A A092000 _Ray Chandler_, Feb 22 2004